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https://issues.apache.org/jira/browse/LUCENE-3820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13217485#comment-13217485
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Dawid Weiss commented on LUCENE-3820:
-------------------------------------
That's Robert's evil piece of random pattern generation... I told him this
would stress the pattern engine more than our code and this seems to be the
case ;) The above seems like a heavy backtracking/ recursion pattern, something
Russ Cox was writing about (http://swtch.com/~rsc/regexp/regexp1.html).
I'd just add @Ignore to this test? Alternatively, I'd make it absolute-time
bound and simply terminate after, say, 3 seconds.
> Wrong trailing index calculation in PatternReplaceCharFilter
> ------------------------------------------------------------
>
> Key: LUCENE-3820
> URL: https://issues.apache.org/jira/browse/LUCENE-3820
> Project: Lucene - Java
> Issue Type: Bug
> Reporter: Dawid Weiss
> Assignee: Dawid Weiss
> Priority: Minor
> Fix For: 3.6, 4.0
>
> Attachments: LUCENE-3820.patch, LUCENE-3820.patch,
> LUCENE-3820_test.patch, LUCENE-3820_test.patch
>
>
> Reimplementation of PatternReplaceCharFilter to pass randomized tests (used
> to throw exceptions previously). Simplified code, dropped boundary
> characters, full input buffered for pattern matching.
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